java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1230_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2c62905 [2018-09-19 16:35:28,274 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-19 16:35:28,276 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-19 16:35:28,293 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-19 16:35:28,293 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-19 16:35:28,294 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-19 16:35:28,295 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-19 16:35:28,298 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-19 16:35:28,299 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-19 16:35:28,300 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-19 16:35:28,301 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-19 16:35:28,302 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-19 16:35:28,302 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-19 16:35:28,303 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-19 16:35:28,305 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-19 16:35:28,305 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-19 16:35:28,306 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-19 16:35:28,308 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-19 16:35:28,312 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-19 16:35:28,318 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-19 16:35:28,319 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-19 16:35:28,320 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-19 16:35:28,326 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-19 16:35:28,326 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-19 16:35:28,327 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-19 16:35:28,330 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-19 16:35:28,331 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-19 16:35:28,331 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-19 16:35:28,332 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-19 16:35:28,333 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-19 16:35:28,334 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-19 16:35:28,334 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-19 16:35:28,334 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-19 16:35:28,335 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-19 16:35:28,335 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-19 16:35:28,336 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-19 16:35:28,336 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-09-19 16:35:28,354 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-19 16:35:28,355 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-19 16:35:28,356 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-19 16:35:28,356 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-19 16:35:28,358 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-19 16:35:28,358 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-19 16:35:28,359 INFO L133 SettingsManager]: * Use SBE=true [2018-09-19 16:35:28,359 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-19 16:35:28,360 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-19 16:35:28,360 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-19 16:35:28,360 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-19 16:35:28,360 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-19 16:35:28,360 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-19 16:35:28,360 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-19 16:35:28,361 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-09-19 16:35:28,361 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-09-19 16:35:28,361 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-19 16:35:28,361 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-19 16:35:28,363 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-19 16:35:28,363 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-19 16:35:28,363 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-19 16:35:28,363 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-19 16:35:28,363 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-19 16:35:28,364 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-19 16:35:28,364 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-19 16:35:28,364 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-19 16:35:28,364 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-19 16:35:28,365 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-09-19 16:35:28,365 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-19 16:35:28,365 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-09-19 16:35:28,366 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-09-19 16:35:28,366 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-19 16:35:28,415 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-19 16:35:28,432 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-19 16:35:28,437 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-19 16:35:28,439 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-19 16:35:28,439 INFO L276 PluginConnector]: CDTParser initialized [2018-09-19 16:35:28,440 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1230_true-unreach-call.c [2018-09-19 16:35:28,798 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/072df3f50/d2a826b90eae4d85b6ffb8ac726530b5/FLAG7e2cad612 [2018-09-19 16:35:28,925 INFO L277 CDTParser]: Found 1 translation units. [2018-09-19 16:35:28,925 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1230_true-unreach-call.c [2018-09-19 16:35:28,933 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/072df3f50/d2a826b90eae4d85b6ffb8ac726530b5/FLAG7e2cad612 [2018-09-19 16:35:28,954 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/072df3f50/d2a826b90eae4d85b6ffb8ac726530b5 [2018-09-19 16:35:28,964 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-19 16:35:28,968 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-09-19 16:35:28,969 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-19 16:35:28,969 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-19 16:35:28,976 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-19 16:35:28,977 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.09 04:35:28" (1/1) ... [2018-09-19 16:35:28,980 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bf93baf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:35:28, skipping insertion in model container [2018-09-19 16:35:28,980 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.09 04:35:28" (1/1) ... [2018-09-19 16:35:28,991 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-19 16:35:29,205 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-19 16:35:29,224 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-19 16:35:29,245 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-19 16:35:29,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:35:29 WrapperNode [2018-09-19 16:35:29,292 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-19 16:35:29,293 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-19 16:35:29,293 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-19 16:35:29,294 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-19 16:35:29,309 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:35:29" (1/1) ... [2018-09-19 16:35:29,309 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:35:29" (1/1) ... [2018-09-19 16:35:29,324 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:35:29" (1/1) ... [2018-09-19 16:35:29,324 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:35:29" (1/1) ... [2018-09-19 16:35:29,339 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:35:29" (1/1) ... [2018-09-19 16:35:29,345 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:35:29" (1/1) ... [2018-09-19 16:35:29,347 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:35:29" (1/1) ... [2018-09-19 16:35:29,351 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-19 16:35:29,352 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-19 16:35:29,352 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-19 16:35:29,352 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-19 16:35:29,353 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:35:29" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-19 16:35:29,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-19 16:35:29,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-19 16:35:29,504 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2018-09-19 16:35:29,504 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_float [2018-09-19 16:35:29,505 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2018-09-19 16:35:29,505 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-19 16:35:29,505 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-09-19 16:35:29,505 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2018-09-19 16:35:29,505 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-09-19 16:35:29,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2018-09-19 16:35:29,506 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-09-19 16:35:29,506 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-09-19 16:35:29,506 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_float [2018-09-19 16:35:29,506 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2018-09-19 16:35:29,506 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-19 16:35:29,506 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-19 16:35:29,507 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-19 16:35:29,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE4 [2018-09-19 16:35:29,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2018-09-19 16:35:29,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-09-19 16:35:29,507 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2018-09-19 16:35:29,989 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:35:30,042 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:35:30,212 INFO L356 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-19 16:35:30,213 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.09 04:35:30 BoogieIcfgContainer [2018-09-19 16:35:30,213 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-19 16:35:30,214 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-19 16:35:30,215 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-19 16:35:30,219 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-19 16:35:30,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.09 04:35:28" (1/3) ... [2018-09-19 16:35:30,220 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63d9be2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.09 04:35:30, skipping insertion in model container [2018-09-19 16:35:30,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:35:29" (2/3) ... [2018-09-19 16:35:30,221 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63d9be2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.09 04:35:30, skipping insertion in model container [2018-09-19 16:35:30,221 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.09 04:35:30" (3/3) ... [2018-09-19 16:35:30,223 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1230_true-unreach-call.c [2018-09-19 16:35:30,234 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-19 16:35:30,244 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-19 16:35:30,306 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-19 16:35:30,307 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-19 16:35:30,307 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-19 16:35:30,307 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-19 16:35:30,307 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-19 16:35:30,307 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-19 16:35:30,308 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-19 16:35:30,308 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-19 16:35:30,308 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-19 16:35:30,344 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2018-09-19 16:35:30,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-09-19 16:35:30,356 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:35:30,358 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 16:35:30,368 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:35:30,375 INFO L82 PathProgramCache]: Analyzing trace with hash 1802458678, now seen corresponding path program 1 times [2018-09-19 16:35:30,383 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:35:30,384 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2018-09-19 16:35:30,398 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:35:30,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:35:30,518 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:35:30,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-19 16:35:30,552 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:35:30,573 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:35:30,573 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-19 16:35:30,579 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-19 16:35:30,597 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-19 16:35:30,597 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-19 16:35:30,600 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 2 states. [2018-09-19 16:35:30,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:35:30,630 INFO L93 Difference]: Finished difference Result 81 states and 102 transitions. [2018-09-19 16:35:30,630 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-19 16:35:30,631 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 24 [2018-09-19 16:35:30,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:35:30,641 INFO L225 Difference]: With dead ends: 81 [2018-09-19 16:35:30,642 INFO L226 Difference]: Without dead ends: 41 [2018-09-19 16:35:30,646 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-19 16:35:30,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-09-19 16:35:30,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-09-19 16:35:30,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-09-19 16:35:30,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 48 transitions. [2018-09-19 16:35:30,695 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 48 transitions. Word has length 24 [2018-09-19 16:35:30,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:35:30,695 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 48 transitions. [2018-09-19 16:35:30,695 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-19 16:35:30,696 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2018-09-19 16:35:30,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-09-19 16:35:30,698 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:35:30,699 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 16:35:30,699 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:35:30,699 INFO L82 PathProgramCache]: Analyzing trace with hash -1841206223, now seen corresponding path program 1 times [2018-09-19 16:35:30,700 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:35:30,700 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2018-09-19 16:35:30,712 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2018-09-19 16:35:30,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:35:30,781 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:35:30,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-19 16:35:30,856 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:35:30,868 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:35:30,869 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-19 16:35:30,871 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-19 16:35:30,871 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-19 16:35:30,871 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-19 16:35:30,872 INFO L87 Difference]: Start difference. First operand 41 states and 48 transitions. Second operand 4 states. [2018-09-19 16:35:30,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:35:30,983 INFO L93 Difference]: Finished difference Result 54 states and 62 transitions. [2018-09-19 16:35:30,984 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-19 16:35:30,984 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2018-09-19 16:35:30,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:35:30,987 INFO L225 Difference]: With dead ends: 54 [2018-09-19 16:35:30,988 INFO L226 Difference]: Without dead ends: 44 [2018-09-19 16:35:30,989 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-19 16:35:30,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-09-19 16:35:30,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-09-19 16:35:30,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-09-19 16:35:31,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 52 transitions. [2018-09-19 16:35:31,001 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 52 transitions. Word has length 33 [2018-09-19 16:35:31,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:35:31,002 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 52 transitions. [2018-09-19 16:35:31,002 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-19 16:35:31,002 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 52 transitions. [2018-09-19 16:35:31,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-09-19 16:35:31,004 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:35:31,004 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 16:35:31,005 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:35:31,005 INFO L82 PathProgramCache]: Analyzing trace with hash 1530245693, now seen corresponding path program 1 times [2018-09-19 16:35:31,006 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:35:31,006 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2018-09-19 16:35:31,018 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2018-09-19 16:35:31,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:35:31,075 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:35:31,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-19 16:35:31,106 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:35:31,117 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:35:31,117 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-19 16:35:31,118 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-19 16:35:31,118 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-19 16:35:31,119 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-19 16:35:31,119 INFO L87 Difference]: Start difference. First operand 44 states and 52 transitions. Second operand 4 states. [2018-09-19 16:35:31,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:35:31,164 INFO L93 Difference]: Finished difference Result 57 states and 66 transitions. [2018-09-19 16:35:31,164 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-19 16:35:31,164 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2018-09-19 16:35:31,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:35:31,166 INFO L225 Difference]: With dead ends: 57 [2018-09-19 16:35:31,166 INFO L226 Difference]: Without dead ends: 47 [2018-09-19 16:35:31,167 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-19 16:35:31,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-09-19 16:35:31,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 44. [2018-09-19 16:35:31,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-09-19 16:35:31,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 52 transitions. [2018-09-19 16:35:31,176 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 52 transitions. Word has length 34 [2018-09-19 16:35:31,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:35:31,177 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 52 transitions. [2018-09-19 16:35:31,177 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-19 16:35:31,177 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 52 transitions. [2018-09-19 16:35:31,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-09-19 16:35:31,178 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:35:31,178 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 16:35:31,179 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:35:31,179 INFO L82 PathProgramCache]: Analyzing trace with hash 1792427957, now seen corresponding path program 1 times [2018-09-19 16:35:31,180 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:35:31,180 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2018-09-19 16:35:31,187 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:35:31,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:35:31,260 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:35:31,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-19 16:35:31,376 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:35:31,389 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:35:31,389 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-19 16:35:31,390 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-19 16:35:31,390 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-19 16:35:31,390 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-19 16:35:31,391 INFO L87 Difference]: Start difference. First operand 44 states and 52 transitions. Second operand 4 states. [2018-09-19 16:35:31,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:35:31,477 INFO L93 Difference]: Finished difference Result 57 states and 66 transitions. [2018-09-19 16:35:31,478 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-19 16:35:31,478 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2018-09-19 16:35:31,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:35:31,480 INFO L225 Difference]: With dead ends: 57 [2018-09-19 16:35:31,480 INFO L226 Difference]: Without dead ends: 47 [2018-09-19 16:35:31,481 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-19 16:35:31,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-09-19 16:35:31,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 44. [2018-09-19 16:35:31,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-09-19 16:35:31,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 52 transitions. [2018-09-19 16:35:31,493 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 52 transitions. Word has length 35 [2018-09-19 16:35:31,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:35:31,495 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 52 transitions. [2018-09-19 16:35:31,496 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-19 16:35:31,496 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 52 transitions. [2018-09-19 16:35:31,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-09-19 16:35:31,498 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:35:31,498 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 16:35:31,499 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:35:31,499 INFO L82 PathProgramCache]: Analyzing trace with hash -136871486, now seen corresponding path program 1 times [2018-09-19 16:35:31,501 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:35:31,501 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2018-09-19 16:35:31,509 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:35:31,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:35:31,568 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:35:31,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-19 16:35:31,888 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:35:31,903 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:35:31,903 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-09-19 16:35:31,904 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-19 16:35:31,904 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-19 16:35:31,904 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-09-19 16:35:31,905 INFO L87 Difference]: Start difference. First operand 44 states and 52 transitions. Second operand 9 states. [2018-09-19 16:35:32,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:35:32,639 INFO L93 Difference]: Finished difference Result 51 states and 59 transitions. [2018-09-19 16:35:32,639 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-09-19 16:35:32,639 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 36 [2018-09-19 16:35:32,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:35:32,642 INFO L225 Difference]: With dead ends: 51 [2018-09-19 16:35:32,642 INFO L226 Difference]: Without dead ends: 44 [2018-09-19 16:35:32,643 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2018-09-19 16:35:32,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-09-19 16:35:32,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 41. [2018-09-19 16:35:32,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-09-19 16:35:32,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2018-09-19 16:35:32,650 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 36 [2018-09-19 16:35:32,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:35:32,651 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2018-09-19 16:35:32,651 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-19 16:35:32,651 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2018-09-19 16:35:32,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-09-19 16:35:32,653 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:35:32,653 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 16:35:32,653 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:35:32,654 INFO L82 PathProgramCache]: Analyzing trace with hash -2090172777, now seen corresponding path program 1 times [2018-09-19 16:35:32,654 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:35:32,654 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2018-09-19 16:35:32,667 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:35:32,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:35:32,748 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:35:32,791 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-09-19 16:35:32,791 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:35:32,807 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:35:32,807 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-19 16:35:32,807 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-19 16:35:32,808 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-19 16:35:32,808 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-19 16:35:32,809 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand 4 states. [2018-09-19 16:35:32,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:35:32,856 INFO L93 Difference]: Finished difference Result 54 states and 61 transitions. [2018-09-19 16:35:32,857 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-19 16:35:32,857 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 49 [2018-09-19 16:35:32,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:35:32,859 INFO L225 Difference]: With dead ends: 54 [2018-09-19 16:35:32,859 INFO L226 Difference]: Without dead ends: 44 [2018-09-19 16:35:32,860 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-19 16:35:32,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-09-19 16:35:32,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-09-19 16:35:32,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-09-19 16:35:32,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 51 transitions. [2018-09-19 16:35:32,867 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 51 transitions. Word has length 49 [2018-09-19 16:35:32,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:35:32,868 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 51 transitions. [2018-09-19 16:35:32,868 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-19 16:35:32,868 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 51 transitions. [2018-09-19 16:35:32,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-09-19 16:35:32,870 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:35:32,870 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 16:35:32,870 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:35:32,871 INFO L82 PathProgramCache]: Analyzing trace with hash -2037596367, now seen corresponding path program 1 times [2018-09-19 16:35:32,871 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:35:32,871 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2018-09-19 16:35:32,888 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2018-09-19 16:35:32,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:35:32,965 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:35:32,999 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-09-19 16:35:32,999 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:35:33,010 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:35:33,010 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-19 16:35:33,011 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-19 16:35:33,011 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-19 16:35:33,011 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-19 16:35:33,012 INFO L87 Difference]: Start difference. First operand 44 states and 51 transitions. Second operand 4 states. [2018-09-19 16:35:33,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:35:33,067 INFO L93 Difference]: Finished difference Result 57 states and 65 transitions. [2018-09-19 16:35:33,074 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-19 16:35:33,074 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 50 [2018-09-19 16:35:33,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:35:33,076 INFO L225 Difference]: With dead ends: 57 [2018-09-19 16:35:33,076 INFO L226 Difference]: Without dead ends: 47 [2018-09-19 16:35:33,077 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-19 16:35:33,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-09-19 16:35:33,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 44. [2018-09-19 16:35:33,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-09-19 16:35:33,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 51 transitions. [2018-09-19 16:35:33,084 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 51 transitions. Word has length 50 [2018-09-19 16:35:33,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:35:33,085 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 51 transitions. [2018-09-19 16:35:33,085 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-19 16:35:33,085 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 51 transitions. [2018-09-19 16:35:33,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-09-19 16:35:33,087 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:35:33,087 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 16:35:33,088 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:35:33,088 INFO L82 PathProgramCache]: Analyzing trace with hash 191150482, now seen corresponding path program 1 times [2018-09-19 16:35:33,088 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:35:33,089 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2018-09-19 16:35:33,093 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:35:33,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:35:33,170 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:35:33,330 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-09-19 16:35:33,330 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:35:33,341 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:35:33,342 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-19 16:35:33,343 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-19 16:35:33,343 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-19 16:35:33,344 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-19 16:35:33,344 INFO L87 Difference]: Start difference. First operand 44 states and 51 transitions. Second operand 5 states. [2018-09-19 16:35:33,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:35:33,603 INFO L93 Difference]: Finished difference Result 55 states and 61 transitions. [2018-09-19 16:35:33,604 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-19 16:35:33,604 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 51 [2018-09-19 16:35:33,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:35:33,606 INFO L225 Difference]: With dead ends: 55 [2018-09-19 16:35:33,606 INFO L226 Difference]: Without dead ends: 44 [2018-09-19 16:35:33,606 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-09-19 16:35:33,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-09-19 16:35:33,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-09-19 16:35:33,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-09-19 16:35:33,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 50 transitions. [2018-09-19 16:35:33,613 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 50 transitions. Word has length 51 [2018-09-19 16:35:33,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:35:33,613 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 50 transitions. [2018-09-19 16:35:33,613 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-19 16:35:33,614 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 50 transitions. [2018-09-19 16:35:33,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-09-19 16:35:33,615 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:35:33,615 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 16:35:33,615 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:35:33,616 INFO L82 PathProgramCache]: Analyzing trace with hash 892215060, now seen corresponding path program 1 times [2018-09-19 16:35:33,616 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:35:33,616 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2018-09-19 16:35:33,625 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:35:33,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:35:33,687 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:35:33,959 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-09-19 16:35:33,960 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:35:33,974 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:35:33,974 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-09-19 16:35:33,974 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-19 16:35:33,975 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-19 16:35:33,975 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-09-19 16:35:33,975 INFO L87 Difference]: Start difference. First operand 44 states and 50 transitions. Second operand 10 states. [2018-09-19 16:35:34,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:35:34,485 INFO L93 Difference]: Finished difference Result 51 states and 57 transitions. [2018-09-19 16:35:34,486 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-19 16:35:34,486 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 51 [2018-09-19 16:35:34,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:35:34,487 INFO L225 Difference]: With dead ends: 51 [2018-09-19 16:35:34,488 INFO L226 Difference]: Without dead ends: 41 [2018-09-19 16:35:34,493 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2018-09-19 16:35:34,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-09-19 16:35:34,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-09-19 16:35:34,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-09-19 16:35:34,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2018-09-19 16:35:34,502 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 51 [2018-09-19 16:35:34,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:35:34,507 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2018-09-19 16:35:34,508 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-19 16:35:34,508 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2018-09-19 16:35:34,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-09-19 16:35:34,509 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:35:34,509 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 16:35:34,510 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:35:34,510 INFO L82 PathProgramCache]: Analyzing trace with hash -1581339685, now seen corresponding path program 1 times [2018-09-19 16:35:34,514 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:35:34,514 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 11 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2018-09-19 16:35:34,523 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:35:34,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:35:34,589 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:35:34,615 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-09-19 16:35:34,615 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:35:34,626 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:35:34,626 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-19 16:35:34,627 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-19 16:35:34,627 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-19 16:35:34,627 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-19 16:35:34,628 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 4 states. [2018-09-19 16:35:34,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:35:34,648 INFO L93 Difference]: Finished difference Result 54 states and 58 transitions. [2018-09-19 16:35:34,649 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-19 16:35:34,649 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2018-09-19 16:35:34,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:35:34,650 INFO L225 Difference]: With dead ends: 54 [2018-09-19 16:35:34,650 INFO L226 Difference]: Without dead ends: 43 [2018-09-19 16:35:34,650 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-19 16:35:34,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-09-19 16:35:34,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2018-09-19 16:35:34,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-09-19 16:35:34,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2018-09-19 16:35:34,657 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 51 [2018-09-19 16:35:34,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:35:34,658 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2018-09-19 16:35:34,658 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-19 16:35:34,658 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2018-09-19 16:35:34,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-09-19 16:35:34,659 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:35:34,659 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 16:35:34,660 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:35:34,660 INFO L82 PathProgramCache]: Analyzing trace with hash -1789299466, now seen corresponding path program 1 times [2018-09-19 16:35:34,660 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:35:34,661 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 12 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with mathsat -unsat_core_generation=3 [2018-09-19 16:35:34,668 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:35:34,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:35:34,734 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:35:34,995 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-09-19 16:35:34,995 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:35:35,005 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:35:35,005 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-09-19 16:35:35,006 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-19 16:35:35,006 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-19 16:35:35,006 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-09-19 16:35:35,007 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 9 states. [2018-09-19 16:35:35,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:35:35,254 INFO L93 Difference]: Finished difference Result 41 states and 45 transitions. [2018-09-19 16:35:35,254 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-09-19 16:35:35,255 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 52 [2018-09-19 16:35:35,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:35:35,255 INFO L225 Difference]: With dead ends: 41 [2018-09-19 16:35:35,255 INFO L226 Difference]: Without dead ends: 0 [2018-09-19 16:35:35,256 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2018-09-19 16:35:35,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-09-19 16:35:35,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-09-19 16:35:35,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-09-19 16:35:35,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-09-19 16:35:35,257 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 52 [2018-09-19 16:35:35,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:35:35,258 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-09-19 16:35:35,258 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-19 16:35:35,258 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-09-19 16:35:35,258 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-09-19 16:35:35,264 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-09-19 16:35:35,498 INFO L426 ceAbstractionStarter]: For program point isnan_floatFINAL(line 44) no Hoare annotation was computed. [2018-09-19 16:35:35,498 INFO L429 ceAbstractionStarter]: At program point isnan_floatENTRY(line 44) the Hoare annotation is: true [2018-09-19 16:35:35,498 INFO L426 ceAbstractionStarter]: For program point isnan_floatEXIT(line 44) no Hoare annotation was computed. [2018-09-19 16:35:35,498 INFO L429 ceAbstractionStarter]: At program point fmin_floatENTRY(lines 34 41) the Hoare annotation is: true [2018-09-19 16:35:35,498 INFO L426 ceAbstractionStarter]: For program point fmin_floatEXIT(lines 34 41) no Hoare annotation was computed. [2018-09-19 16:35:35,499 INFO L426 ceAbstractionStarter]: For program point fmin_floatFINAL(lines 34 41) no Hoare annotation was computed. [2018-09-19 16:35:35,499 INFO L426 ceAbstractionStarter]: For program point L40(line 40) no Hoare annotation was computed. [2018-09-19 16:35:35,499 INFO L426 ceAbstractionStarter]: For program point L40-2(line 40) no Hoare annotation was computed. [2018-09-19 16:35:35,499 INFO L422 ceAbstractionStarter]: At program point L37(line 37) the Hoare annotation is: (and (= fmin_float_~x |fmin_float_#in~x|) (= fmin_float_~y |fmin_float_#in~y|)) [2018-09-19 16:35:35,499 INFO L426 ceAbstractionStarter]: For program point L37-1(lines 37 38) no Hoare annotation was computed. [2018-09-19 16:35:35,499 INFO L422 ceAbstractionStarter]: At program point L35(line 35) the Hoare annotation is: (and (= fmin_float_~x |fmin_float_#in~x|) (= fmin_float_~y |fmin_float_#in~y|)) [2018-09-19 16:35:35,500 INFO L426 ceAbstractionStarter]: For program point L35-1(lines 35 36) no Hoare annotation was computed. [2018-09-19 16:35:35,500 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-09-19 16:35:35,500 INFO L429 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-09-19 16:35:35,500 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-09-19 16:35:35,500 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-09-19 16:35:35,500 INFO L429 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-09-19 16:35:35,500 INFO L429 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-09-19 16:35:35,500 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-09-19 16:35:35,501 INFO L429 ceAbstractionStarter]: At program point mainENTRY(lines 46 64) the Hoare annotation is: true [2018-09-19 16:35:35,501 INFO L426 ceAbstractionStarter]: For program point mainFINAL(lines 46 64) no Hoare annotation was computed. [2018-09-19 16:35:35,501 INFO L426 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 59) no Hoare annotation was computed. [2018-09-19 16:35:35,501 INFO L426 ceAbstractionStarter]: For program point L59(line 59) no Hoare annotation was computed. [2018-09-19 16:35:35,501 INFO L422 ceAbstractionStarter]: At program point L58(line 58) the Hoare annotation is: (let ((.cse0 (fp.div RNE (_ +zero 8 24) (_ +zero 8 24)))) (and (= .cse0 main_~res~0) (= .cse0 main_~y~0))) [2018-09-19 16:35:35,502 INFO L426 ceAbstractionStarter]: For program point L58-1(lines 58 61) no Hoare annotation was computed. [2018-09-19 16:35:35,502 INFO L426 ceAbstractionStarter]: For program point mainEXIT(lines 46 64) no Hoare annotation was computed. [2018-09-19 16:35:35,502 INFO L422 ceAbstractionStarter]: At program point L56(line 56) the Hoare annotation is: (let ((.cse0 (fp.div RNE (_ +zero 8 24) (_ +zero 8 24)))) (and (= .cse0 main_~x~0) (= .cse0 main_~y~0))) [2018-09-19 16:35:35,502 INFO L426 ceAbstractionStarter]: For program point L56-1(line 56) no Hoare annotation was computed. [2018-09-19 16:35:35,502 INFO L426 ceAbstractionStarter]: For program point __fpclassify_floatFINAL(lines 11 32) no Hoare annotation was computed. [2018-09-19 16:35:35,502 INFO L426 ceAbstractionStarter]: For program point L25(lines 25 31) no Hoare annotation was computed. [2018-09-19 16:35:35,502 INFO L426 ceAbstractionStarter]: For program point L17(line 17) no Hoare annotation was computed. [2018-09-19 16:35:35,503 INFO L426 ceAbstractionStarter]: For program point L17-1(line 17) no Hoare annotation was computed. [2018-09-19 16:35:35,503 INFO L426 ceAbstractionStarter]: For program point L15(line 15) no Hoare annotation was computed. [2018-09-19 16:35:35,503 INFO L426 ceAbstractionStarter]: For program point L17-2(line 17) no Hoare annotation was computed. [2018-09-19 16:35:35,503 INFO L426 ceAbstractionStarter]: For program point L15-1(line 15) no Hoare annotation was computed. [2018-09-19 16:35:35,503 INFO L426 ceAbstractionStarter]: For program point L15-2(line 15) no Hoare annotation was computed. [2018-09-19 16:35:35,503 INFO L426 ceAbstractionStarter]: For program point L15-3(line 15) no Hoare annotation was computed. [2018-09-19 16:35:35,503 INFO L426 ceAbstractionStarter]: For program point L28(lines 28 31) no Hoare annotation was computed. [2018-09-19 16:35:35,503 INFO L426 ceAbstractionStarter]: For program point L22(lines 22 31) no Hoare annotation was computed. [2018-09-19 16:35:35,504 INFO L426 ceAbstractionStarter]: For program point L16(line 16) no Hoare annotation was computed. [2018-09-19 16:35:35,504 INFO L426 ceAbstractionStarter]: For program point L14-1(lines 14 18) no Hoare annotation was computed. [2018-09-19 16:35:35,504 INFO L429 ceAbstractionStarter]: At program point __fpclassify_floatENTRY(lines 11 32) the Hoare annotation is: true [2018-09-19 16:35:35,504 INFO L429 ceAbstractionStarter]: At program point L14-3(lines 14 18) the Hoare annotation is: true [2018-09-19 16:35:35,504 INFO L426 ceAbstractionStarter]: For program point L14-4(lines 11 32) no Hoare annotation was computed. [2018-09-19 16:35:35,504 INFO L426 ceAbstractionStarter]: For program point __fpclassify_floatEXIT(lines 11 32) no Hoare annotation was computed. [2018-09-19 16:35:35,511 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.09 04:35:35 BoogieIcfgContainer [2018-09-19 16:35:35,512 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-19 16:35:35,513 INFO L168 Benchmark]: Toolchain (without parser) took 6547.76 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 735.6 MB). Free memory was 1.4 GB in the beginning and 1.9 GB in the end (delta: -451.5 MB). Peak memory consumption was 284.0 MB. Max. memory is 7.1 GB. [2018-09-19 16:35:35,514 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-19 16:35:35,515 INFO L168 Benchmark]: CACSL2BoogieTranslator took 323.97 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-09-19 16:35:35,516 INFO L168 Benchmark]: Boogie Preprocessor took 58.05 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-19 16:35:35,516 INFO L168 Benchmark]: RCFGBuilder took 861.67 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 735.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -780.6 MB). Peak memory consumption was 27.2 MB. Max. memory is 7.1 GB. [2018-09-19 16:35:35,517 INFO L168 Benchmark]: TraceAbstraction took 5297.41 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 304.9 MB). Peak memory consumption was 304.9 MB. Max. memory is 7.1 GB. [2018-09-19 16:35:35,522 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 323.97 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 58.05 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 861.67 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 735.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -780.6 MB). Peak memory consumption was 27.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5297.41 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 304.9 MB). Peak memory consumption was 304.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 59]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 45 locations, 1 error locations. SAFE Result, 5.2s OverallTime, 11 OverallIterations, 2 TraceHistogramMax, 2.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.2s HoareAnnotationTime, HoareTripleCheckerStatistics: 505 SDtfs, 31 SDslu, 1466 SDs, 0 SdLazy, 204 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 469 GetRequests, 418 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 14 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 12 LocationsWithAnnotation, 26 PreInvPairs, 31 NumberOfFragments, 48 HoareAnnotationTreeSize, 26 FomulaSimplifications, 20 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 12 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 466 NumberOfCodeBlocks, 466 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 455 ConstructedInterpolants, 3 QuantifiedInterpolants, 32455 SizeOfPredicates, 15 NumberOfNonLiveVariables, 1014 ConjunctsInSsa, 57 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 84/84 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...